Carburetor



1929- J.,M. AMADOR 1,712,129

. CARBURETOR Filed June 4, 1926 2 Sheets-Sheet 1 f .1 Fig-"E INVENTQR v May 7, 1929.

I 2 Sheets-Sheet 2 0 w V 49 I 13 .50

Q5 INVENTOR I I ATTONEY Patented May 7, 1929.

.UNlTED STATES Joaquin MIRANDA AMAnoR, or HABANA, CUBA.

CABBURETOR.

Application filed June 4,

This invention relates generally to carburotors used on internal combustion engines, the invention having moreparticular referonce to a novel type of carburetor. i

The invention has for an object the provision of a carburetor embodying certain adjustable and variable elements. v

For further comprehension of the inven tion, and of the objects and advantages thereof, reference will be hadt-o the following description and accompanying drawing, and to. the appended claim in which the various novel features of the invention are more particularly set forth.

Fig. 1, oi the drawings, is a front elevational View of my improved carburetor.

Fig. 2, is a rear el-evationalview hercof.

Fig. 3, is a top plan view thcreof. I

Fig. 41, is'a bottom plan view of the mixing chamber, as seen fromlthe line 4+4: oil Fig. 2. p p

Fig. 5, is a longitudinal.-vertical central sectional view of my improved carburetor.

. Fig. 6, is a transverse sectional. View, taken on the line 66 of Fig. 2.

Fig. 7, is a. longitudinal vertical central sectional view, illustrating a modification of my improved carburetor, c i

Fig. 8 is atop plan view thereof.

Fig. 9, is an enlarged view ofthe air inlet valve shown in Fig. 7.

As here embodied my improvedcarburetor, for internal combustion motors comprises an air intake member 10, ofhol'low construction, and isprovidcdwith a butterfly valve 11 having a lever 12,-to reg'ulateorcontrol the air entering themixing chamber oi the carburetor, the valvell being of the type commonly used in 'carburetorsfor' internal combustion motors.

The mixing'cha'mber 13, has a lower depending flange 14-, adapted to receive the air intake member 10, which is removably attached thereto by screws 15, studs, bolts, or the like. The .mixing chamber 13 is provided with two separate lower chambers 16, oppositely positioned therein, and separated by a lower central wall 17." The two lower chambers 16 are connected with. the upper chamber 16. The butterfly valves 18 and 19 are pivoted, as at 20, inthemixing chamber 13, and are positionedinthe two lower sepa. rate chambers 16, so as to regulate or control the air entering the upper chamber 21;,"fro1n the said mixing. chamber. 1 The lever 22,;is attached, as -at23 to the butterfly-valve19,

1926. Serial No. 113,780.

and is .pivotally connected to the bell crank 24, by the rod25. The bell crank 24 being suitably connected, at its extremity 26, by any suitable controlling device, rods, flexible members or the likenot shown in thedrawings, to anysuitable and conveniently. lo-

cated throttle, of the type commonly used to regulate or control butterfly valves otcarburetors' of the class described.

The needlevalve 27 is slidably positioned in a suitable aperture 28 located in the said central wall 17, located outside the two separatejchambers 16, and adjacent thereto, and

extends downward,.andthrough an aperture 29, located in the jetf30, which is threadedly attached to the central wall 17. It should be understood that the needle valve 27 is provided with a pointed extremity 31.

The above described construction is such will permit the'needle valve27 when raised and lowered to permit a greater or lesser amount of fuel to enter the orifice 32 comn' unicating wit-h the center aperture 33 of the-central wall 17. Itshould also be understood thatthe orifice 3 1 is located below the said jet 30, and is in communicationwith the saidcenter aperture33; o'

A plug 35 is threadedly attached to the center aperture 33, and is provided with an axial aperture 36. The aperture 87 is locatedin the central wall 17, and-is'co'nnccted Y with the aperture 33 and with the upper chamber 16. The plug 38 is'threadedly attached to. the, lower portion of the. taperture'33.. y c y 'The'mixing chamber 13 is provided with a flange 39 locatediat the upper extremity the axial aperture 36 of the plug 35, through the aperture'37, through the upper chamber 16 and into thecombustion chamber of the said internal combustion motor, when the said needle valve27 isin a closed position.

It should beunderstood thatthe said axial aperture 36 of thep'lug will be o'l. iii

, cientsiZe'Or diameter, t permitthe said 111-:

ternal combustion motor to run at only low, or idling speed. The plug may be Q removed or replaced by a similar plug; not

, needle valve 27.

shown in the drawings having a smaller or larger passage therethrough as desired for the purpose of suitably adjusting the permanent flow of liquid for regulating the idling rotation of the motor. The above described construction is such as will also permit the said fuel, when the needle valve 27 is in an opened position, to be drawn or sucked through the aperture 29, through the aper' ture 33, through the upper chamber 16 and into the combustion chamber of the said internal combustion motor. It should be understood that the threaded lower extremity 40 of the aperture 29 is adapted to receive a suitable connection as a means of connecting thereto a. fuel. line suitably connected to a fuel tank of the type ordinarily us d in connection with internal combustion motors.

The needle valve 27 is provided with an enlarged head 41, positioned over the arm d2, having an aperture 43 adapted to receive the The arm 42 pivotally attached, as at 4:4, to a support 45, attached to the mixing chamber 13, and has pivotally attached thereto, as at 46, a rod 47. pivotally attached to the arm 18, of the above mentioned butterfly valve 18. v

The above described construction is such as will permit the above mentioned lever when pivoted, to open the said needle valve 27, any desired amount, so as to permit a greater or smaller qmmtity of fuel to enter the combustion chamber of the said internal combustion motor.

My improved carburetor may also have threadedly attached thereto, an auxiliary air needle valve 49 positioned in the aperture 50. The aperture 50 is connected with the said central aperture 37, and with an aperture 51, so as to permit any desired quarn tity of air to be sucked into the upper chamber 16', and mixed with the fuel, as may be required fora proper combustible mixture, as is common practice with carburetors of all classes and types.

Referring in particular in Fl 7, and 8,

of the accompanying drawings, in which I have illustrated a modification of my improved carburetor, the float chamber is provided with a cover 61, adapted to contain a float 62, having attached thereto an arm 63, pivoted as at 64, and pivotally attached, as at 65, to the needle valve 66. The needle valve (36 is slidably mounted in the cap 67,

suitably attached to the auxiliary chamber 68. An inlet connection is attached by threads shown at 60 to the wall of the auxiliary chamber 68 as a. means of attaching the inlet swivel 71 adapted to receive a fitting such as commonly used to connect a fuel line. The fuel line or conduit may be connected to a suitable fuel tank. The tank and fuel conduit are not being shown in the above referred to Figs. 7 and 8 of the accompanying drawings but are of commen ordinary construction and design, such as generally used in carburetors of the class and type described.

The inlet connection 70 is provided with an axial aperture 71, adapted to receive a tubular member 72, provided with radial apertures 73, communicating with radial apertures 74, located in the inlet connection 70. The above described construction is such will permit the radial apertures 73 of the tubular member 72, to determine the quantity of fuel delivered to the needle valve 66. It should be understood that the number and size or diameter of the said radial apertures 73 will determine the above referred to quantity of fuel; it being further understood that the fuel, will take or be sucked through, as hcreinbefore set forth, the passages designated by the indicating arrow clearly shown in Fig. 7, and that the outlet 75 will be suitably connected to the combustion chamber of the above referred to internal combustion motor.

A needle valve .57 is attached to the cover 61 by means of a nut 55', having a needle 58, as a means of permitting the outlet of air through the orifice 56. Needle 58 having attached to its lower extremity, a thin rod. which is raised by the arm 63 and opens the valve.

Having thus described my invention, what I claim as new and desire to protect by Letters Patent of the United States is as follows:

A carburetor of the class described comprising a casing having an air passage therethrough, a wall in said casing comprising an external extension, said wall and extension being provided with substantially vertical apertures communicatively connected at their upper extremities by a passage through said wall and. said extension and communicatively connected intermediate their extremities by a second passage through said wall and extension, a valve seat disposed in the aperture of said extension between the passages communicating therewith, a plug screw threaded in the aperture of said wall for providing a well there above, a plug disposed in the aperture of said wall between the passages therein so as to divide said well into upper and lower chambers, said second-named plug havingan orifice therein adapted to permit liquid fuel to flow therethrough from said lower chamber to said upper chamber, a passageway for supplying air to said upper chamber whereby said fuel may be partially emulsified before passing into the air passage of the casing, means for regulating the amount of air flowing through said passageway, and a second passage from said upper chamber into the air passage of said casing for producing a mixture of air and fuel of predetermined richness, and a needle valve disposed through an aperture in said extension engaged with Wall to unite with the liquid fuel discharged said valve seat at its lower end and extendthrough the orifice of said second-named 10 ing above said extension at its upper end plug forsuitably increasing the richness of adapted to be manually manipulated during the mixture of air and fuel in said air pasoperation of said carburetor for permitting sage above a predetermined amount.

liquid fuel to pass through said Valve seat In testimony whereof I have ailixed my and throughtlie uppermost passage in said signature.

Wall and extension. into the aperture of said JOAQUIN MIRANDA AMADOR. 

